It's off by default.
@ -18,6 +18,6 @@ ebml: libebml-$(EBML_VERSION).tar.xz .sum-ebml
$(MOVE)
.ebml: ebml toolchain.cmake
cd $< && $(HOSTVARS_PIC) $(CMAKE) -DENABLE_WIN32_IO=OFF
cd $< && $(HOSTVARS_PIC) $(CMAKE)
+$(CMAKEBUILD) $< --target install
touch $@